Patents by Inventor Gwang-yol NOH
Gwang-yol NOH has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9973017Abstract: A charger circuit includes a first path regulator, a path switch, and a second path regulator. The first path regulator is configured to generate a first regulation current based on an input voltage and an input current. The path switch is configured to pass or block a first charging current in response to a control signal. The first charging current is generated based on the first regulation current. The second path regulator is configured to generate a second regulation current based on the input voltage and the input current. At least one of the first charging current and a second charging current is used to charge a battery. The second charging current is generated based on the second regulation current. The second charging current is transferred to the battery without passing through the path switch.Type: GrantFiled: September 16, 2015Date of Patent: May 15, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ryotaro Kudo, Dongjin Keum, Yus Ko, Hyunseok Nam, Gwang-Yol Noh, Whanseok Seo, Jaeyoup Choi
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Patent number: 9859796Abstract: A method of operating a buck-boost converter including an inductor and a capacitor includes; operating the buck-boost converter in boost mode until a level of an input voltage applied at an input node of the buck-boost converter reaches a desired level of an output voltage apparent at an output node of the buck-boost converter, and after the level of an input voltage reaches the desired level of the output voltage, operating the buck-boost converter in buck mode, wherein operating the buck-boost converter in buck mode and operating the buck-boost converter in boost mode overlap at least in part temporally proximate a point at which the level of the input voltage exceeds the level of the output voltage.Type: GrantFiled: April 16, 2015Date of Patent: January 2, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Gil-Won Yoon, Dong-Jin Keum, Yus Ko, Gwang-Yol Noh, Sung-Woo Moon, Min-Ho Choi
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Patent number: 9793811Abstract: A voltage converter includes first and second charging elements, first and second switches, and first and second switch controllers. The first switch controller adjusts a first activation timing of a first control signal in response to a pulse width modulation signal, a switch signal, and a first control signal. The first control signal is a signal for controlling the first switch. The second switch controller adjusts a second activation timing of a second control signal in response to the pulse width modulation signal, the first control signal, and a second control signal. The second control signal is a signal for controlling the second switch.Type: GrantFiled: June 10, 2015Date of Patent: October 17, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Gwang-Yol Noh, Yus Ko, Dongjin Keum, Hwayeal Yu
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Patent number: 9641076Abstract: A switching regulator switches a current from input direct current (DC) power to generate target DC power. The switching regulator includes: a direct current (DC)-DC converter and a ripple injection circuit. The DC-DC converter is configured to: generate an output voltage at an output terminal based on an input voltage applied to an input terminal, and according to a switching cycle that selectively forms a voltage-down current path or a voltage-up current path based on a comparison between a reference voltage and a voltage sensed at a feedback node; and apply a feedback current from the output terminal to the feedback node. The ripple injection circuit is configured to: generate a pulse current synchronized with the switching cycle; and apply the pulse current to the feedback node.Type: GrantFiled: January 5, 2015Date of Patent: May 2, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ryotaro Kudo, Gwang-yol Noh, Hwa-yeal Yu
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Patent number: 9548661Abstract: A DC-DC converter is provided. The DC-DC converter includes at least one converter circuit configured to include an inductor and to supply a current to a load through the inductor; and a controller configured to sense the current to generate a sensed signal, to sample and hold the sensed signal at a predetermined sampling time to detect an average current of the inductor, and to control an operation of the at least one converter circuit according to the average current. The sampling time is set to a time in a period while the inductor current is less than a peak and greater than a valley.Type: GrantFiled: April 15, 2015Date of Patent: January 17, 2017Assignee: Samsung Electronics Co., Ltd.Inventors: Kudo Ryotaro, Gwang Yol Noh, Hwa Yeal Yu
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Publication number: 20160087462Abstract: A charger circuit includes a first path regulator, a path switch, and a second path regulator. The first path regulator is configured to generate a first regulation current based on an input voltage and an input current. The path switch is configured to pass or block a first charging current in response to a control signal. The first charging current is generated based on the first regulation current. The second path regulator is configured to generate a second regulation current based on the input voltage and the input current. At least one of the first charging current and a second charging current is used to charge a battery. The second charging current is generated based on the second regulation current. The second charging current is transferred to the battery without passing through the path switch.Type: ApplicationFiled: September 16, 2015Publication date: March 24, 2016Inventors: RYOTARO KUDO, DONGJIN KEUM, YUS KO, HYUNSEOK NAM, GWANG-YOL NOH, WHANSEOK SEO, JAEYOUP CHOI
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Publication number: 20160036328Abstract: A voltage converter includes first and second charging elements, first and second switches, and first and second switch controllers. The first switch controller adjusts a first activation timing of a first control signal in response to a pulse width modulation signal, a switch signal, and a first control signal. The first control signal is a signal for controlling the first switch. The second switch controller adjusts a second activation timing of a second control signal in response to the pulse width modulation signal, the first control signal, and a second control signal. The second control signal is a signal for controlling the second switch.Type: ApplicationFiled: June 10, 2015Publication date: February 4, 2016Inventors: GWANG-YOL NOH, YUS KO, DONGJIN KEUM, HWAYEAL YU
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Publication number: 20150357916Abstract: A method of operating a buck-boost converter including an inductor and a capacitor includes; operating the buck-boost converter in boost mode until a level of an input voltage applied at an input node of the buck-boost converter reaches a desired level of an output voltage apparent at an output node of the buck-boost converter, and after the level of an input voltage reaches the desired level of the output voltage, operating the buck-boost converter in buck mode, wherein operating the buck-boost converter in buck mode and operating the buck-boost converter in boost mode overlap at least in part temporally proximate a point at which the level of the input voltage exceeds the level of the output voltage.Type: ApplicationFiled: April 16, 2015Publication date: December 10, 2015Inventors: GIL-WON YOON, DONG-JIN KEUM, YUS KO, GWANG-YOL NOH, SUNG-WOO MOON, MIN-HO CHOI
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Publication number: 20150303808Abstract: A DC-DC converter is provided. The DC-DC converter includes at least one converter circuit configured to include an inductor and to supply a current to a load through the inductor; and a controller configured to sense the current to generate a sensed signal, to sample and hold the sensed signal at a predetermined sampling time to detect an average current of the inductor, and to control an operation of the at least one converter circuit according to the average current. The sampling time is set to a time in a period while the inductor current is less than a peak and greater than a valley.Type: ApplicationFiled: April 15, 2015Publication date: October 22, 2015Inventors: KUDO RYOTARO, GWANG YOL NOH, HWA YEAL YU
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Publication number: 20150194892Abstract: A switching regulator switches a current from input direct current (DC) power to generate target DC power. The switching regulator includes: a direct current (DC)-DC converter and a ripple injection circuit. The DC-DC converter is configured to: generate an output voltage at an output terminal based on an input voltage applied to an input terminal, and according to a switching cycle that selectively forms a voltage-down current path or a voltage-up current path based on a comparison between a reference voltage and a voltage sensed at a feedback node; and apply a feedback current from the output terminal to the feedback node. The ripple injection circuit is configured to: generate a pulse current synchronized with the switching cycle; and apply the pulse current to the feedback node.Type: ApplicationFiled: January 5, 2015Publication date: July 9, 2015Inventors: Ryotaro KUDO, Gwang-yol NOH, Hwa-yeal YU